diff --git a/pkgs/development/python-modules/whey/default.nix b/pkgs/development/python-modules/whey/default.nix
index ace0f3fbad75..e07c68a3a423 100644
--- a/pkgs/development/python-modules/whey/default.nix
+++ b/pkgs/development/python-modules/whey/default.nix
@@ -55,7 +55,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "whey" ];
 
   optional-dependencies = {
-    all = lib.flatten (lib.attrValues (lib.filterAttrs (n: v: n != "all") optional-dependencies));
+    all = lib.flatten (lib.attrValues (lib.removeAttrs optional-dependencies [ "all" ]));
     editable = [
       editables
     ];